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    • 6. 发明申请
    • Memory built-in self test engine apparatus and method with trigger on failure and multiple patterns per load capability
    • 内存自检引擎装置和方法,具有故障触发和每种负载能力的多种模式
    • US20060179369A1
    • 2006-08-10
    • US11055195
    • 2005-02-10
    • Elianne BravoKenneth ChanKevin GowerDustin VanStee
    • Elianne BravoKenneth ChanKevin GowerDustin VanStee
    • G11C29/00
    • G11C29/16G11C11/401
    • A memory built-in self test (MBIST) apparatus and method for testing dynamic random access memory (DRAM) arrays, the DRAM arrays in communication with a memory interface device that includes interface logic and mainline chip logic. The MBIST apparatus includes a finite state machine including a command generator and logic for incrementing data and addresses under test and a command scheduler in communication with the finite state machine. The command scheduler includes resource allocation logic for spacing commands to memory dynamically utilizing DRAM timing parameters. The MBIST apparatus also includes a test memory storing subtests of an MBIST test. Each of the subtests provides a full pass through a configured address range. The MBIST apparatus further includes a subtest pointer in communication with the test memory and the finite state machine. The finite state machine implements subtest sequencing of each of the subtests via the subtest pointer.
    • 用于测试动态随机存取存储器(DRAM)阵列的存储器内置自检(MBIST)装置和方法,所述DRAM阵列与包括接口逻辑和主线芯片逻辑的存储器接口装置通信。 MBIST装置包括有限状态机,其包括用于递增待测数据和地址的命令发生器和逻辑,以及与有限状态机通信的命令调度器。 命令调度器包括用于动态地利用DRAM时序参数将命令间隔到存储器的资源分配逻辑。 MBIST设备还包括存储MBIST测试的分测验的测试存储器。 每个分测验提供完整的配置地址范围。 MBIST装置还包括与测试存储器和有限状态机通信的子测试指针。 有限状态机通过子测验指针实现每个子测验的子测序。
    • 7. 发明申请
    • Method Of Leveling A Plurality Of Audio Signals
    • 调整多种音频信号的方法
    • US20120170771A1
    • 2012-07-05
    • US13394141
    • 2009-02-02
    • Leonard TsaiRobert CampesiKenneth Chan
    • Leonard TsaiRobert CampesiKenneth Chan
    • H03G3/00
    • H03G3/3089H03G3/3026
    • A system with an input amplifier to receive and amplify a first audio signal, an output amplifier to output an audio signal which includes at least one of the amplified first audio signal and a second audio signal, a controller to adjust the input amplifier to a first input amp gain and the output amplifier to a first output amp gain to provide an output signal including the first audio signal at a first output signal level. The controller is to adjust the output amplifier to a second output amp gain to provide an audio output including the second audio signal at a second output signal level and determine an output amp ratio by dividing the first output amp gain with the second output amp gain. The controller is to determine a target input amp gain by multiplying the first input amp gain by the output amp ratio and adjust the first input amp gain to the target input amp gain to provide an audio output including the first audio signal at a third output signal level.
    • 一种具有输入放大器以接收和放大第一音频信号的系统,输出放大器以输出包括放大的第一音频信号和第二音频信号中的至少一个的音频信号,控制器将输入放大器调整为第一音频信号 输入放大器增益和输出放大器到第一输出放大器增益,以提供包括第一输出信号电平的第一音频信号的输出信号。 控制器将输出放大器调整为第二输出放大器增益,以提供包括第二输出信号电平的第二音频信号的音频输出,并通过将第一输出放大器增益与第二输出放大器增益相除来确定输出放大比。 控制器通过将第一输入放大器增益乘以输出放大器比率来确定目标输入放大器增益,并将第一输入放大器增益调整到目标输入放大器增益,以在第三输出信号处提供包括第一音频信号的音频输出 水平。